the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A simple improvement of a tip loss model for actuator disc and actuator line simulations
Abstract. The loading of a wind turbine decreases towards the blade tip due to the velocities induced by the tip vortex and due to the spanwise flow. This tip loss effect has to be taken into account when performing actuator disc simulations, where the single blades of the turbine are not modeled, and when performing actuator line simulations, where the resolution typically is not fine enough to properly resolve the tip vortex. A widely used method applies a factor on the axial and tangential loading of the turbine. This factor decreases when approaching the blade tip. It has been shown that the factor should be different for the axial and tangential loading of the turbine due to the rotation of the resulting force vector at the airfoil sections caused by the induced velocity. The present article contains the derivation of a simple correction for the tangential load factor that takes this rotation into account. The correction does not need any additional curve fitting but just depends on the local airfoil characteristics and angle of attack.
- Preprint
(700 KB) - Metadata XML
- BibTeX
- EndNote
-
RC1: 'Review', Anonymous Referee #1, 30 Oct 2018
- AC1: 'Answer to reviewer 1', Georg Raimund Pirrung, 11 Dec 2018
-
RC2: 'Review of paper WES-2018-59', Anonymous Referee #2, 09 Nov 2018
- AC2: 'Answer to reviewer 2', Georg Raimund Pirrung, 11 Dec 2018
-
RC1: 'Review', Anonymous Referee #1, 30 Oct 2018
- AC1: 'Answer to reviewer 1', Georg Raimund Pirrung, 11 Dec 2018
-
RC2: 'Review of paper WES-2018-59', Anonymous Referee #2, 09 Nov 2018
- AC2: 'Answer to reviewer 2', Georg Raimund Pirrung, 11 Dec 2018
Viewed
HTML | XML | Total | BibTeX | EndNote | |
---|---|---|---|---|---|
1,343 | 611 | 86 | 2,040 | 118 | 113 |
- HTML: 1,343
- PDF: 611
- XML: 86
- Total: 2,040
- BibTeX: 118
- EndNote: 113
Viewed (geographical distribution)
Country | # | Views | % |
---|
Total: | 0 |
HTML: | 0 |
PDF: | 0 |
XML: | 0 |
- 1
Cited
3 citations as recorded by crossref.
- Experimental and numerical investigations of actuator disks for wind turbines M. Ranjbar et al. 10.1002/ese3.670
- Power curve and wake analyses of the Vestas multi-rotor demonstrator M. van der Laan et al. 10.5194/wes-4-251-2019
- Multimodel validation of single wakes in neutral and stratified atmospheric conditions P. Doubrawa et al. 10.1002/we.2543